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36v 7ah Stealth Water Bottle Battery (15a Discharge)

     This Water Bottle Battery is great for making lightweight, low key, 'stealth' conversions. Offered exclusively in 36v, this highly water-resistant encased battery, and an aviation grade discharge connector. You will need a water bottle cage/holder that mounts to your bike frame, where the battery sits and blends in as an 'ordinary water bottle' - or you can throw it in a bag/backpack, or on a rack if you'd prefer. We like to call it the 'H2GO' Battery.

     - This battery is 252 watt hours. On average riders use around 20-25 watt hours per mile. This is the perfect battery for approximately 12.5 miles around town (although with lower power/assist you may get up to 25 miles or so), and it is light and small enough to carry a spare to extend your range.

    - This pack is suitable for lower power 36 volt systems that only require 15 amps max continuous discharge. We specifically pair this battery with our 36v TDSZ2 Models, but 36v BBS01 Models will also work fine if they are tuned down. Otherwise, certain smaller 36v hub systems only require 15 amps max as well, but you will have to check your current setup's requirements to be sure.

- This battery features our custom BMS which allows charging through the discharge port ~ for full compatibility with our Eco Cycle Dual Battery Balancer which allows you to link 2 batteries together with 1 line going to your motor, and 1 charge port for easy charging of both batteries (although you can still charge independently through the stock charge port as well)

   -  This Battery uses an aviation discharge connector with an XT90s Anti-Spark Connector (fully sheathed with no exposed wire) - however we have a variety of Adapters available for easy pairing with whatever motor/kit you plan to use it with. As with all our products, this is covered by our Comprehensive Warranty and Extended Support Plan.

- This Battery DOES NOT include a charger, however if you purchase any of our 36v chargers (which have an XT60 end and accept various adapters), we will include the appropriate DC5521 Barrel Adapter for no additional charge - Search: 5 results found for "36v charger*" - Eco Cycles (



  • Blends in as Water Bottle and Fits Snugly in Included Water Bottle Holder
  • Highly Water-Resistant Solid Case
  • Very Lightweight
  • Power Button
  • DC5521 Barrel Plug Charge Port
  • NO Charger Included
  • Aviation Style Screw On Adapter with 6" Discharge Cable Connects to the Bottom of the Battery and Uses an XT90s Anti-Spark Connector (fully sheathed with no exposed wire)
  • Discharge Cable Adapters Available


  • Capacity: 36v (42v Fully Charged) 7.0ah
  • Configuration: 10 Series 2 Parallel
  • Cells: Sanyo GA 3500mah
  • Cycle Life: 500+ Cycles @ =/> 80%
  • Output: 15a Continuous Discharge
  • Input: 3a Max Charging Supported
  • Low Voltage Cutoff: 30v
  • Weight: 2.9 lbs (1.3 kg)
  • Dimensions: 3" Diameter * 7.375" Long/Tall (75mm Diameter * 190mm Long/Tall)